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4,426
RESULTS

texts texts 4,426
COLLECTION
TOPIC atoz
bell system 3,615
frequency 694
bell 595
system 480
telephone 424
circuit 387
signal 367
data 306
noise 237
equation 219
output 218
error 216
optical 212
network 206
phase 206
engaged 202
impedance 200
sigma 197
digital 194
cable 187
magnetic 176
institute 174
voltage 174
tau beta 171
current 168
electron 168
fiber 166
waveguide 166
loss 165
mode 163
theorem 161
power 160
switching 160
channel 159
input 158
circuits 157
kappa 157
eta kappa 154
antenna 151
pulse 150
filter 147
design 142
beam 137
wave 135
exp 130
modes 129
speech 128
carrier 126
field 125
function 124
values 124
repeater 122
tau 118
amplitude 116
program 116
sin 115
eta 114
amplifier 109
equations 109
ieee 109
matrix 107
trunk 106
tube 100
beta 98
control 97
test 96
delay 94
diode 93
radio 92
gain 89
linear 88
loop 87
fibers 85
surface 84
code 83
random 81
systems 81
ess 71
wire 71
filters 70
silicon 70
relay 68
coaxial 65
member 64
toll 64
cathode 63
lemma 62
ghz 60
density 59
model 59
crystal 58
fourier 58
calls 56
trunks 55
center 54
lens 54
western 54
binary 51
curves 51
coding 50
optimum 50
unit 50
average 49
energy 48
signals 48
vector 48
pulses 47
core 46
rate 46
graph 45
pcm 45
errors 44
echo 43
grid 43
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